Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 464412cb312efbf0…

MALICIOUS

PDF / .VIR

549.7 KB Created: 2023-07-18 00:38:53 Authoring application: Nitro PDF First seen: 2024-06-27
MD5: 3357d1f60a3c2eb519ef125bbcc14d1c SHA-1: c2ed061b35882c3437ff37e57a77f9496fef34b3 SHA-256: 464412cb312efbf02e75e9a2b3257d7bbe15fbb89b02a9c43cdc0bd170e02e07
284 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6817

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://o-jeter-les-livres.ellectronic.com/34.pdf In PDF document text
    • http://adservice.google.com.kw/ddm/clk/408533097;208818505;l;;%3F//stna-practice-test-pdf.lawyersandlawfirms.com/xale.pdfIn PDF document text
    • http://kia-optima-2001-owners-manual-pdf.scrippstownhome.com/dapiwoxitu.pdfIn PDF document text
    • https://adservice.google.com.do/ddm/clk/310682673;138356009;g;;%3F//when-harlem-was-in-vogue.wuwofimor.cfd/9144578.pdfIn PDF document text
    • http://erica-mena-before-surgery.motorcycleangels.org/pugekup.pdfIn PDF document text
    • http://introduction-to-management-john-r-scherm.lynx.parts/fije.pdfIn PDF document text
    • https://tevosafari.haviol.co.za/919771552765967765?nuxalobokomelesudowobipikakofagabejawokigeted=rurimogaseboderijipobabaroxodipazuwazebizomuvewejifixememutefitufazonojivorerawenazotidudapuluvirepirofesinibotalewukoponafomemixiputozigupizubitejajojugenajezalinuxenanefirisidugipukafifetokodixafemope&utm_term=go+keyboard+pro+apk+mod&lufexideradukelapojegagajonilulofafifobufadirowuzeluxivinerutuwaxolomudopuvovimiwesutunuk=tasigomomopodumokozosozubejunobuzebuvulupunofuwivotutefodararetenezunekorudekikuzijidularefefarigosedatisaneximipunolewivuliIn PDF document text
    • https://comptia-a-certification-all-in-one-exam.titolida.cfd/sib.pdfIn PDF document text
    • https://tevosafari.haviol.co.za/919771552765967765?nuxalobokomelesudowobipikakofagabejawokigeted=rurimogaseboderijipobabaroxodipazuwazebizomuvewejifixememutefitufazonojivorerawenazotidudapuluvirepirofesinibotalewukoponafomemixiputozigupizubitejajojugenajezalinuxenanefirisidugipukafifetokodixafemope&PDF link annotation
    • https://tevosafari.haviol.co.za/919771552765967765?nuxalobokomelesudowobipikakofagabejawokigeted=rurimogaseboderijipobabaroxodipazuwazebizomuvewejifixememutefitufazonojivorerawenazotidudapuluvirepirofesinibotalewukoponafomemixiputozigupizubitejajojugenajezalinuxenanefirisidugipukafifetokodixafemope&utm_term=go+keyboard+pro+apk+mod&lufexideradukelapojegagajonilulofafifobufadirowuzeluxivinerutuwaxolomudopuvovimiwesutunuk=tasigomomopodumokozosozubejunobuzebuvulupunofuwivotutefodararetenezunekorudekPDF link annotation
    • http://wenq.org/In extracted file (font_01_sfnt_off00085cce.bin)
    • http://adservice.google.co.nz/ddm/clk/478229754;284365575;c;;%3F//somik.plandomeassociation.net/bati.pdfIn PDF document text
    • http://adservice.google.gy/ddm/clk/466651624;272226156;i;;%3F//les-5-blessures-de-l-me-pdf.impareggiabile.com/18.pdfIn PDF document text
    • http://adservice.google.mn/ddm/clk/300948314;127869103;e;;%3F//flight-from-nyc-to-moscow.fishingtreasures.xyz/48.pdfIn PDF document text
    • https://adservice.google.iq/ddm/clk/448794861;252804937;a;;%3F//army-officer-s-guide-54th-edition-pdf.dopidis.cfd/jadutupeforu.pdfIn PDF document text
    • http://adservice.google.to/ddm/clk/424929466;226923624;r;;%3F//captain-toad-treasure-tracker-episode-3.estiebestiebusinesspros.com/kiguw.pdfIn PDF document text
    • http://adservice.google.cm/ddm/clk/448794861;252804937;a;;%3F//psychology-in-action-by-karen-huffman-9t.dusk.blue/marezinekeb.pdfIn PDF document text
    • http://adservice.google.cl/ddm/clk/478229754;284365575;c;;%3F//introduction-to-international-relations.ufpnews.com/30.pdfIn PDF document text
    • http://adservice.google.ps/ddm/clk/310682673;138356009;g;;%3F//lolekoba.girlcodeghana.org/xunonofadekupajeru.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00083130.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00083130.bin)
    • http://nmr.mgh.harvard.edu/~fangq/In extracted file (font_01_sfnt_off00085cce.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_01_sfnt_off00085cce.bin)
    • http://gnu.org/licenses/gpl.htmlIn extracted file (font_03_sfnt_off00087c2b.bin)
🗂 Part of campaign: wenq.org 13 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00083130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83130 17120 bytes
SHA-256: e99ca34991ca337d015b94197b2a8576e2692e053ee4d714a8739078a96d686f
font_01_sfnt_off00085cce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CCE 3096 bytes
SHA-256: 8fc38416c2742673f47a9487c22d60e89192861cc0c999e641ee7ff6f06c706e
font_02_sfnt_off000866e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866E2 16164 bytes
SHA-256: fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467
font_03_sfnt_off00087c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C2B 2272 bytes
SHA-256: 4060d5abff48bff08a77bc65223dac94708807243752682d03008ec6511ecbd5